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YEAR 9 ATOMS Flashcards | StudBud
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YEAR 9 ATOMS
YEAR 9 ATOMS
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Year 9 Chemistry Exam revision quiz #chemistry
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1
Aluminium has 13 protons. It loses 3 electrons. What will the ION charge be?
Al +3
Al-3
A+ 3
A -3
2
A sodium atom has 11 electrons. How many electrons would be in its second electron shell?
1
8
3
10
3
A Fluorine atom has a mass number 19 and an atomic number 9. How many NEUTRONS does it have?
19
9
10
11
4
Oxygen has an atomic number 8. What would the electron configuration of Oxygen be?
2, 6
2, 4, 2
2, 5, 1
1, 7
5
What is the chemical symbol for Sodium?
Na
S
So
Cu
6
What element has the chemical symbol S?
Sodium
Sulfur
Strontium
Silicon
7
Chemistry is the study of:
matter
attractions
Chemicals
atoms
8
Always be positive, like a...
neutron
electron
proton
9
Define the 'mass number' of an atom.
The total number of protons and electrons
The total number of protons, electrons and neutrons
The number of protons
The total number of protons and neutrons
10
Determine the electron configuration for the element with atomic number 16.
8, 8
2, 8, 6
2, 2, 8, 4
2, 14
11
What does the formula H2O tell us?
1 Hydrogen, 1 Oxygen
2 Hydrogen, 2 Oxygen
2 Hydrogen, 1 Oxygen
All living things need this to survive
12
The chemical formula for calcium chloride is CaCl
2
. What two elements are present here?
Carbon and Chlorine
Carbon and Chloride
Calcium and Chlorine
Carbon and Calcium
